Lewis & Clark: The Journey of the Corps of Discovery
In 1801, the United States ended at the Mississippi River and almost all Americans lived 50 miles west of the Atlantic Ocean. When President Thomas Jefferson bought the Louisiana Territory from Napoleon, he doubled the country's size. The sudden western expansion of the United States--and rumors of a Northwest Passage that would link the Atlantic with the Pacific--motivated Jefferson to find the great byway to the West. D

7:00 pm

Blackfeet Encounter
In July 1806, Meriwether Lewis and another member of the Corps of Discovery killed two Blackfeet warriors and marked the only deadly clash between American Indians and the otherwise peaceful Lewis and Clark Expedition. The documentary also depicts the tragedies and challenges endured by the Blackfeet people during the 19th and 20th centuries, including intertribal fighting, massacres, starvation, unemployment, poverty and racism.G

Nightly Business Report
Tonight on Nightly Business Report, UPS, the world's biggest package delivery company, issues a warning to investors that its earnings won't be as strong as originally thought. What does this bellwether say about the health of the economy? And, more baby boomers are taking up options trading. But do the risks outweigh the rewards?. D

Secrets of Althorp - The Spencers
Nineteen generations of Spencers have occupied this childhood home and final resting place of Diana, Princess of Wales. Diana's brother Charles the 9th Earl Spencer provides a personal tour, saying he likes to greet new guests in the library, a room that puts visitors at ease. An ancient globe in the corner of the library also reveals how the world was viewed hundreds of years ago.G